Slip-joint for pipes.



C. D. MILNE.

SLIP JOINT FOR PIPBS. APPLIUATION FILED MAR. w, 190s.

936,469. Patented 001;. 12,1909.

' Cattaraugus,

UNITED STATES PATENT OFFICE.

CHARLES D. MILNE, OF CATTARAUGUS, NEW YORK, yASSIGNOIL TO CENTURY BRASS i MANUFACTURING COMPANY, 0F CATTARAUGUS, NEW YORK, A. CORPORATION 0F NEW YORK.

SLIP-JOINT FOR PIPES.

Specication of Letters Patent.

ratentea'oct. 12,1909.

To all 'whom 'it may concern:

Be it known that I, CHARLES D. MILNE, of in the county of Cattaraugus, in the State of New York, have invented new and useful Improvements in Slip-Joints for Pipes, of which the following, taken in connection with the accompanying drawings, isa full, clear, and `exact description.

This invention relates to certaln improvements in sli joints for pipes and is particularly use ul in connection with the drainage` and over flow pipes of bath tubsI and similar fixtures where the angle between the `pipe and portion of the fixture to which it is attached varies more or less with different fixtures.

It is well known that the end and bottom of bath tubsand similar fixtures having ovr flow and drainage pipes connected to each other vary more or less in their relative angles of inclination to and fromv a vertical or horizontal plane andt-hat these pipes are usually provided with terminal elbows or angles rigidly screwed or otherwise secured thereto and that the tee or junction of the over flow and' drainage pipe is also rigid therewith thus holding the plpes at substantiallyright angles to each other and that when attaching these rigid connections to the end and bottom of the bath` tub ory similar fixture in which the angles of such ends or bottom vary from a vertical or horizontal position, it is'often very difficult to make the connection between the pipe and fixture without over-straining the parts or leaving a more or less open joint which is not only objectionable in appear-l 1 ance but frequently causes leakage.

My main object, therefore, the angles such as the elbows or tees of such pipe with flexible slip joints which are not only water ti ht but allow a limited lateral adjustment o? the elbows, tees or pipes relatively to each other in all radial directions so that the attaching elements of the pipe is 'to provide or pipes may be properly secured to the fixture without over-straining any of the joined parts or leaving any of the joints open. v

Another object is to` provide' each'slip joint with a flexible ring of circular cross section to serve the double purpose of a water tight packing and also as a yielding roller bearing between the jointed parts of the pipe so that said parts may be rocked laterally to conform to any reasonable variation in the parallelism between the pipe and fixture.

Anotherlobject is to provide each fitting such as the elbow or tee with a concave abutting face or shoulder concentric with the center of oscillation of the pipe or fitting and against which the adjacent end of the ,pipe is adapted to abut so that when the joined parts are adjusted or rocked relatively to each other the abutting, faces will be maintained in close contact to each other to reduce the liability of leakage at this joint.

Other'objects and uses relating to specific parts ofthe slip joints will be brought out 1n the following description,

In the drawings-Figure l is a sectional View of one end of a bath tub showing the over flow and drainage pipes joined to each other and to the adjacent end and bottom of the bath tub, said pipes and their fittings being shown in section although the elbows are shown partly in elevation. Fig. 2 is an enlarged transverse sectional View through one of the slip joints.

In order to demonstrate the practicability of my invention, I have shown one end of u bath tub -las provided with an over flow opening 2- and a drainage opening 3. The over fiow opening -2- communicates with an elbow or angle litting -4- which is flexibly mounted upon the upper end of an upright over flow pijn- The drainage opening -3- com` municates with a. similar elbow or angular fitting -6- which is also connected by :1 slip joint to a substantially horizontal drainage pipe 7* which in turn is connected to the upright over flow pipe -5* by a tee fitting -8-.

One terminus of each of the fittings t and 6 and each terminus of the fitting 8 is provided with an inwardly-extending angu'- lar fiange 8a having its outer-,face beveled as at 8b and forming a contracted opening 8c. That terminus of .each of the fittings 4 and .6 provided with Ean inwardly-extending angular flange and "'ach terminus of the fitting 8 is provided with an .exteriorly vthreaded nipple 9 to which is attached a threaded sleeve or packing nut 10 having its .outer end, as at 12 inturned so as to project over and beyond the outer edge of a nipple The inner face of the portion l2 of the nut l() is grooved, as at l2a to provide a bearing surface or seat for a yielding ring 1l which is mounted upon the outer edge of the nipple 9 and engages the bearing surface formed by the groove 12a. In cross section the body portion of the ring 1l is cylindrical and of siich diameter to project past theinner face ofthe nipple and the inner' face of the portion 12. The elements 8a, 9, 10 and l1 constitute a flexible slip joint for the end of a pipe. In this connection it will. be stated that each of the pipes 5 and 7 is connected .to its fittings by4 a flexible slip joint constructed in a manner as set forth, the ends of the-pipe being beveled as at 5" and mounted against the beveled surface Sb of the flange 8a, said beveled face constitut-` ing a seat. The inner diameter of each nipple 9 is the same yas the inner diameter of the fitting and the inner diameter of the inturned portion 12 of the nut, sleeve or collar lO'substantially the same as the inner diameter of the fitting. The inner diameter of the nipple is greater than the diameter of the pipe 5 whereby a space 9 is provided between the pipe and the nipple. The inner diameter of thefring 11 is greater than the inner diameter of the pipe 5 and owing to this manner of setting up the ring l1 with respect to the/pipe, when the pipe is-positioned, the ring will be compressed so as to snugly'engage the pipe thereby' preventing leakage even though the joint is a flexible one. The manner of setting `up the nipple 9 and nut or collar or sleeve l0 with respect to the pipe 5, thaty is to say, owing to the inner diameters of the nipple and nut with respect to the diameter 'of the pipe 5, a limited radial adjustment or rocking movement of one of thejointed parts is had upon the other, although the packing ring 11 fits snugly around the pipe and positioned at the end of the nipple 9.

As previously stated the interior diameter of the annular shoulder l2- is somewhat greater than the exterior diameter of the adjacent portion of the pipe which passes therethrough leaving an intervening space to permit the joined parts to be rocked laterally one upon the other and at the same time the packing l1- forms a yielding annular bearing for the pipe to permit such adjust` ment and still malntain a water tight joint betweenv the fitting and pipe. .Theconcave annular shoulder -12- forms a seat or bearing for the end of the adjacent pipe so that when the parts are assembled and tightened in the manner described by the adjusting nut or collar -10 the fitting or pipe may be rocked relatively to each a limited distance to enable the fitting to be properly adjusted to `the fixture. manner the elbow -6- is connected by a slip joint to the pipe -7-, said slip joint In like consisting of a threaded nipple -9-, collarf or sleeve -lO--, and interposed flexible packing 1lsimilar to the corresponding parts previously described, it being understood that the inner diameter of the nipple 9 and nut, collar or sleeve l0 ofthe elbow is somewhat greater than the exterior dialneter of the inclosed portion of the pipe l-7- leaving a sufficient intervening space to permit the elbow f3- and pipe to be rocked relatively to each other upon the bearing 11- so that the fitting' -6- may be properly adjusted to closely yfit against the adjacent portion of the fixture -1-. The opposite ends and branch of the tee fitting -8- are also provided with threaded nipples -9- collars l0- and packing -11- of substantially the same construction as described for the fittings -4- and f5- and in as much as these nipples, collars and packings are for the purpose of forming a flexible slip joint there, the interior diameters of the nipples- 9- and collars or sleeves --10- are somewhat greater than the exterior diameter of the inclosed portions of the pipes which enter the same so as to leave ample intervening space for the united parts'to be rocked one upon the other upon their respective yielding bearings -11- to compensate for any inequality in the parallelism of the pipes with the adjacent portion of the fixture.

It will be seen from the foregoing description that although I may employ. each of these flexible slip joints in the elbows Jland 6 and tee *8- the invention is fittings but rather to the use of a single fitting involving a pipe and fitting 'flexibly mounted thereon with an interposed yield- `not confined to the use of a plurality of such t ing packing of rounding cross section upon j which the joined parts may be rocked radially a limited distance relatively to each other.

What I claim is:

l. A slip joint 'comprising' the combination with a fitting having one terminus thereof provided with an inwardly-extending annular flange with the outer face thereof beveled, said fitting furthermore provided with an exteriorly. threaded nipple integ-ral with and projecting from the fianged end of the fitting, a packing nut engaging said nipple and having an inturned portion ati its outer face overlappin and spaced from the outer edge of the nipple, a yieldable ring interposed between the inturned portion of, the nut and the outer edge of the nipple, the inner'diameter of said nipple being greater than the inner diameter of said ring and the inner diameter of said inturned portion of the nut being greater than the inner diameter of said ring, said beveled face of said flange providing a seat for one end of the pipe which is to be jointed to the t-t-ing, the inner diameter of said ring being` greater than the inner diameter of the pipe.

2. i slip joint for pipes comprising a fitting provided at one end with an externally-threaded nipple, an inwardly-extending iange constitutin a s eat, a packing nut mounted upon said nlpple and provided at its outer fare with an inturned portion eX- tending over and spaced from the outer edge of said nipple, the inner face of said inturned portion being curved, and a'yieldable ring interposed between the outer edge of the nipple and the inner face of said inturned portion, the inner diameter of said nipple being greater than the inner di# ameter of said ring,` the inner diameter of said inturned portion being greater than the inner diameter of said ring, said seat adapted to have mounted thereon the end of a pipe to which is connected the. fit-ting and the inner diameter of said ring being greater than the inner diameter of the' pipe.

3. A slip joint for pipes comprising a fitting provided at one endl with an externally-threaded nipple, an inwardly-extending flange constitutin a seat, a packing nut mounted upon said nlppie and provided at its outer face With an inturned portion eX- tending over and spaced from the outer edge of said nipple7 and a yieldable ring interposed between the outer edge of the nipple and the inner face of said inturned portion, the inner diameter of said nipple being greater than the inner diameter of said ring, the in ner diameter of said inturned portion being greater than the inner diameter of said ring, said seat adapted to have mounted thereon the end of a pipe to which is connected the fitting and the inner diameter of said ring being greater than the inner diameter of the pipe.

In Witness whereof I have hereunto set my hand this 16 day of Januarv 1908.

' CHARLES D. MILNE. Witnesses:

F. E. JOHNSON, J. J. MCCARTHY. 

